Rau cov hlau xaim, peb siv cov hlau tsis muaj hlau #304A los ua cov xaim hlau, cov hlau tsis xeb ntawm cov xaim poly yuav tsum muaj qhov ua tau zoo tiv thaiv xeb thiab ua tau zoo, yog li cov txheej txheem hlau lossis peb cov hlau xaim: GB4240-2007 ， Cov ntsiab lus npib tsib xee tsis pub tsawg tshaj 8%, cov ntsiab lus chromium tsis pub tsawg dua 15%, txwv tsis pub, cov hlau tsis xeb ntawm cov xaim hlau yuav xeb tau yooj yim thiab muaj kev coj ua tsis zoo. dua li, cov hlau tsis xeb ntawm cov xaim poly yuav tsum yog txheej txheem hydride (txheej txheem npau npau), txwv tsis pub, cov hlau tsis xeb hlau yuav yooj yim khoov.

muaj cov hlau tsis muaj steel hlau txoj kab uas hla ntawm poly hlau raws li hauv qab no:

.0.16mm stainless hlau xaim, ib txwm hloov los ntawm Φ0.15mm
Rau Φ0.15mm, kam rau ua yog 0.005mm, uas yog Φ0.145 ~ Φ0.155mm

.0.20mm stainless hlau xaim, qhov kam rau ua yog 0.01mm, uas yog Φ0.19mm ~ Φ0.21mm,

.0.40mm stainless hlau, hloov los ntawm Φ0.35mm, Φ0.37mm

.0.38mm stainless hlau xaim, qhov no tsis muaj, ib txwm hloov los ntawm .0.32mm